Institution: | 1. Department of Respiratory Medicine, Lianshui County People’s Hospital, Huaian, P. R. China;2. Department of Thoracic Surgery, Lianshui County People’s Hospital, Huaian, P. R. China;3. Department of Respiration, Lianshui County People’s Hospital, Huaian, P. R. China;4. Department of Oncology, Lianshui County People’s Hospital, Huaian, P. R. China |